| 1–4 | Paratypes showing normal expressions of the carapace. Natural size |
| 5 | Young carapace with abnormally round outline and anterior eyes. × 3 |
| 6 | The only entire specimen observed, dorsal view. Much compressed and poorly preserved. Natural size |
| 7 | Type. Carapace and two tergites. Carapace exfoliated; tergites showing the ornamentation. × 3 |
| 8 | Interior view of carapace showing the broad doublure. × 3 |
| 9 | Specimen showing a median prolongation in front. × 3 |
| 10 | The holotype. × 3 |
| 11 | Interior view of laterally compressed carapace showing frontal marginal row of tubercles. × 3 |
| 12 | Detached visual area. × 5. The radial lines are wrinkles |
| 13 | Compound eye showing semioval form of ocular node and its ornamented surface. Paratype. Natural size |
| 14 | Central portion of figure 4 enlarged (× 3) to show form of ocellar mound and extent of visual areas Horizon and locality. Shawangunk grit. Otisville, Orange co., N. Y. |
The originals are in the State Museum
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